Photonic band properties of the moire Kagome lattice

Inspired by the emerging field of twistronics, moir & eacute; photonic structures have attracted great interest. In this paper, we introduce the concept of the moir & eacute; Kagome lattice (MKL), which arises from the overlapping of a Kagome lattice at a commensurable angle of 38.211(degrees). MKL exhibits a significantly broader main photonic bandgap (PBG) when compared to the traditional Kagome lattice. Through numerical simulations, we delved into the adjustable properties of the PBG of MKL by varying lattice parameters, including filling factors and materials. Meanwhile, we also observed the presence of photonic flatbands within the MKL structure. Specifically, the emergence of a super flat isolated flatband aids in achieving single-mode omnidirectional lasers and enhancing the omnidirectional electromagnetic interaction of materials, thereby expanding the applications of moir & eacute; photonic crystals. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) license (https://creativecommons.org/licenses/by-nc-nd/4.0/).